Compared with other casting methods, such as precision casting, metal mold casting or die casting, sand casting is indeed a relatively cheap casting method that is suitable for a variety of product shapes and production requirements.

Sand casting is mainly divided into three types: water glass sand, resin sand, and coated sand. The main difference between them is that they use different binders and curing agents, so their production processes are different.

During "Sand casting", first place the lower mold on a flat plate, put a sand box, fill the sand and scrape it tightly. After the lower mold is made, turn the sand mold 180 degrees, put the upper mold, sprinkle the parting agent, put the sand box, fill the sand and make it tight and flat, turn the upper sand box 180 degrees, take out the upper and lower molds respectively, then turn the upper mold 180 degrees and put it together with the lower mold. The sand mold is made and waiting for pouring. This process is commonly known as "sand casting".

Customers often ask us: "Aren't there more advanced casting technologies now? For example, precision casting, die casting, and 3D printing casting, are they better than traditional sand casting?"

When many people hear sand casting, their first reaction may be: Wow, how much sand does this take?

Many people who don't know much about the foundry industry should have been curious about what kind of "sand" sand casting uses?

When many people learn about casting technology, they often ask: "Is sand casting precision high?" This question is very practical.

In fact, the biggest advantage of sand casting is flexibility, low cost and wide adaptability.

When it comes to sand casting, many people will be curious: What is the minimum wall thickness of sand casting? Generally speaking, the minimum wall thickness of sand casting is about 5 mm. If the wall is too thin, the liquid metal is prone to insufficient filling, pores, cracks and other problems during pouring and cooling, so 5 mm is a more reasonable and safe design reference.

​When many people hear sand casting for the first time, they will think that it is not strong enough because of the word "sand". In fact, on the contrary, the sand mold is only a mold material used to form the shape of the casting, and the final shape is high-temperature molten metal, such as cast iron, carbon steel, stainless steel, etc.